[Jason4486]

I was hoping to get some info about the BMW Performance exhaust regarding the installation and removal. I have a leased 2011 335i and I saw a video with the exhaust installed and love the sound. However, I wanted to install different and bigger tips. Would that void the exhaust warranty? Also, how easy or difficult is it to reinstall the OEM exhaust back onto the car? Is there significant cutting required? I would be returning the car with the stock exhaust and then look to sell the Performance exhaust after my lease is up. Any advice/help is greatly appreciated. Thanks in advance.

P.S. I am looking at Tischer's website which has it listed for $1395. Anyone know where or if I can find a better price?

[MusclezMarinara]

cut you mufflers off and enjoy!

[Jason4486]

You mean do a muffler delete? Please explain

[techlogik]

Originally Posted by MusclezMarinara

cut you mufflers off and enjoy!

That was useful...I mean, useless...


Anyway, I don't see why changing the tips on the perf exhaust would void the warranty in anyway. But you just never know until BMW says something. I'm thinking of doing the same thing, having some much larger tips welded on.

I believe it is a direct bolt on with no cutting. But even if cutting was required, just keep the original one, you can clamp it right back on when going back to stock.

PM regarding best price. I can assure you Tischer is not the best around by a long shot.

Their cost from BMW is just a tad over $1,000, so you could probably get a price a few hundy above that.

[Minas335]

My friend changed his to quad the OEM exhaust and no problem at all at the dealer. I'm guessing it is the same as tints it is just a cosmetic change. My other friend did the same but a muffler delete with quad also no problem I did speak to my service manger at the dealer he said as long as the problem was not caused by by the part that you put on the car that will not void your warranty. As soon as my car arrive it is going to a muffler shop for a muffler delete Good luck tho hope this helps.

[E31BMW]

Originally Posted by Jason4486

I was hoping to get some info about the BMW Performance exhaust regarding the installation and removal. I have a leased 2011 335i and I saw a video with the exhaust installed and love the sound. However, I wanted to install different and bigger tips. Would that void the exhaust warranty? Also, how easy or difficult is it to reinstall the OEM exhaust back onto the car? Is there significant cutting required? I would be returning the car with the stock exhaust and then look to sell the Performance exhaust after my lease is up. Any advice/help is greatly appreciated. Thanks in advance.

P.S. I am looking at Tischer's website which has it listed for $1395. Anyone know where or if I can find a better price?

as far as the warranty is concerned, i would check with your dealership. The original dealership i got the car from said they wont service my car if it has an aftermarket exhaust on. EVEN a BMW perf exhaust.... a-holes. so check first

[cb1111]

A muffler delete will certainly cause warranty woes. Expect issues with complaints about general driveability and other drivetrain related issues. On function of the exhaust system is to regulate backpressure. Modifying that changes backpressure.

Some states will fail you on emission testing for a missing muffler as well.

[scrufy]

I'm running the OEM Performance Exhaust on my e90 - purchased from Tischer btw.
I asked a SA at Monrovia BMW in So. Cal. beforehand and he told me the only warranty issues were if there was an odd noise for whatever reason comming from the rear area of the car I wanted fixed, I MAY have to put the stocker back on to make sure it is not causing it.
The install was easy. I took it to a shop but had them do the cut and clamp with all supplied hardware so I could just go back to stock in an hour in my driveway.
It comes with 5 clamps. 4 of them are for both ends of the catback pipe with the resonator on it and one that goes in between the mufflers kind of like creating an "H" pipe.
The sound is very good, but I think its a little loud for me- just based on if I was 10 years younger this thing would be awesome.
You really only barely hear it at highway speeds cruising but anytime you get on the throttle, you hear it great. Response is a little better as well.
Hope that helps. Oh and I looked around for a better price but didn't trust one place and another wanted to charge for shipping. Tischer was FREE shipping.

[Jason4486]

Thanks for the advice everyone. Lets not turn this into a pissing contest you two. I appreciate both of your responses. Has anyone here swapped the original tips for something more aggressive? If so, did it affect the sound? Please post pics if you do!

[hipnotic]

just check with the dealerships regarding warranty. Most are reasonable about it.

[Kid Eh]

Originally Posted by Jason4486

Thanks for the advice everyone. Lets not turn this into a pissing contest you two. I appreciate both of your responses. Has anyone here swapped the original tips for something more aggressive? If so, did it affect the sound? Please post pics if you do!

I did.

http://www.e90post.com/forums/showth...ht=dimisa+tips

[Jason4486]

Originally Posted by Kid Eh

I did.

http://www.e90post.com/forums/showth...ht=dimisa+tips

Thanks but I was hoping for someone who changed the tips on the BMW performance exhaust to chime in. Maybe provide a pic or video and impressions.

[BullowM3]

Originally Posted by cb1111

A muffler delete will certainly cause warranty woes. Expect issues with complaints about general driveability and other drivetrain related issues. On function of the exhaust system is to regulate backpressure. Modifying that changes backpressure.

Some states will fail you on emission testing for a missing muffler as well.

which states would fail you for emissions? a muffler simply muffles the noise. catalytic converters actually change the emissions. i have a quad exhaust setup on a 328i and my dealer gives me no complaints.

[cb1111]

Originally Posted by BullowM3

which states would fail you for emissions? a muffler simply muffles the noise. catalytic converters actually change the emissions. i have a quad exhaust setup on a 328i and my dealer gives me no complaints.

From personal experience, I know that PA, California and Maryland check for "missing" exhaust system components. It is clearly questionable how well they check with all the underbody cladding but the requirement remains.

In addition, many states have some sort of excessive noise regulations. In California, for example, a citation may be issued for cars that:

1) are not equipped with a muffler

2) clearly emit an offensive, harsh, excessive noise, or

3) have a clearly defective exhaust systems (holes, leaks, etc.)

Interestingly enough, in California, the officer decides what is "excessive." Once the ticket is issued, the owner must take the car car to a "Referee Center" for testing and pay a testing fee. If the car's exhaust meets the law (IIRC 95db - but how that is tested is iffy) then the owner gets a compliance certificate that he can take to court.

Accordingly, you need to check your state laws to see how exhaust laws are enforced.

Again, the point is not to dissuade anyone from doing a mod - but to assure that they understand all of the possible consequences of that mod - intended and unintended.

[Doctor T]

I believe there were some earlier posts here about how the BMW Performance Exhaust actually reduced power, based on dyno tests on a 135...

[scrufy]

Originally Posted by Doctor T

I believe there were some earlier posts here about how the BMW Performance Exhaust actually reduced power, based on dyno tests on a 135...

O man...doh... You serious? Well mine feels a bit better, but then again I do have a tune and other supporting mods. Lol it figures, i spend the extra $$$ to get something good and it turns out worse

[Doctor T]

Originally Posted by scrufy

O man...doh... You serious? Well mine feels a bit better, but then again I do have a tune and other supporting mods. Lol it figures, i spend the extra $$$ to get something good and it turns out worse

Well since you have other mods, it could very well be a different story in your case. Enjoy it, I'm sure it sounds good anyway.

Found the link FWIW:
http://www.e90post.com/forums/showthread.php?t=291078

[Jason4486]

I have a hard time believing that this system will decrease the power or performance. I read that thread and it seems to me that, although it will not provide signficant gains, the loss of power is due to a margin of error by the dyno. Im sure that this exhaust paired with the HP Autoworks air filter will provide a little extra kick at least for my butt dyno. Thanks for the feedback and keep it coming.

[cb1111]

The gains from exhausts and intakes by themselves are nonexistent or minimal. Gains are really only realized with a modified ECU - but then you are skating on very thin ice with your warranty.

[sh0rtdyboy]

i have bmw PE on my car i had it for about 1500 miles i love it.well cutting is required between the mid pipe section, once cut if you want to take it off and reinstall it with clamps, it would take prolly 30-40 minutes also the tips you have to cut and weld back on. i would ask the dealer about warranty but if you do decide to install BMW P.E. i have been EST $300 for installation from the dealer. but i would say since you have a lease your better off sticking with dealer's work. it cost me 90 bucks to install mine at a local muffler shop.

[Alexander]

Do a muffler delete. It's cheap and easy. Buy some tips of your choosing and enjoy! I'm sorry but $1400 for an exhaust is hilarious.

[Knights314]

all of the BMW PP are soooo expensive. You could easily do a muffler delete for half that.